Show:
Lines
Triangles
Quadrilaterals
Polygons
Angles
100
Two lines that never, ever, meet.
What are parallel lines?
100
This triangle has all equal sides.
What is an equilateral triangle?
100
A polygon that has four sides.
What is a quadrilateral?
100
An eight sided polygon.
What is an octagon?
100
An angle that measures exactly 90 degrees.
What is a right angle?
200
Two lines the meet and form right angles.
What are perpendicular lines?
200
This triangle has two sides that are the same, and all angles are less than 90 degrees.
What is an acute isosceles triangle?
200
A polygon with four equal sides and four right angles.
What is a square?
200
A five sided polygon.
What is a pentagon?
200
An angle that is less than 90 degrees.
What is an acute angle?
300
A line that has two endpoints.
What is a line segment?
300
This triangle has an angle that is over 90 degrees and all sides are different lengths.
What is an obtuse scalene triangle?
300
A polygon with four right angles, two sets of parallel lines, and opposite sides are equal.
What is a rectangle?
300
A six sided polygon.
What is a hexagon?
300
An angle greater than 90 degrees.
What is an obtuse angle?
400
A line that has one end point and continues on forever in the opposite direction.
What is a ray?
400
The sides of a triangle measure 8ft, 10ft, and 8ft.
What is an isosceles triangle?
400
A polygon with two sets of parallel sides and all equal side lengths.
What is a rhombus?
400
A figure that has at least three sides, all sides are straight, and is closed.
What is a polygon?
400
An example of this angle is the corner of a door.
What is an example of a right angle?
500
A flat, two-dimensional surface that extends forever.
What is a plane?
500
All the angles in the triangle are the same.
What is equiangular?
500
A four sided polygon with exactly one pair of parallel lines, and no right angles.
What is a trapezoid?
500
A ten sided polygon.
What is a decagon
500
180 degrees
What is a straight line?